external image 800px-The_Kiss_-_Gustav_Klimt_-_Google_Cultural_Institute.jpg
The Kiss. Constantin Brancusi. 1907–1908 C.E. Limestone, 23” x 13 ¼” x 10”. Philadelphia Museum of Art, Philadelphia, Pennsylvania.

four-minute video on this artwork, comparing it with other contemporaries, and putting it in political/economic context: https://www.khanacademy.org/humanities/becoming-modern/symbolism/v/gustav-klimt-the-kiss-1907-8

another four-minute video about Klimt's later Death & Life series:
https://www.khanacademy.org/humanities/becoming-modern/symbolism/v/gustav-klimt-death-and-life-1910

interesting short article from the Getty Museum on a sketch for this paintintg:
http://www.getty.edu/art/exhibitions/klimt/cycle_oflife.html